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Cable broadcast receiver, method for interfacing in-band channel, and method for processing broadcast signal

a technology of in-band channel and broadcast receiver, which is applied in the field of cable broadcast receiver, and a method for interfacing an in-band channel, and a processing method for broadcast signals, can solve problems such as unnecessary operations, and achieve the effect of reducing the number of unnecessary operations of invalid channels

Inactive Publication Date: 2007-12-06
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]This disclosure is to provide a cable broadcast receiver, a method for interfacing an in-band channel, and a method for processing a broadcast signal, which enable a host to include specific information indicating the presence or absence of validity of tuned in-band channel data in a transmission message, thereby reducing the number of unnecessary operations of invalid channels of the cable card.

Problems solved by technology

The above-mentioned method for upgrading the firmware of the cable card over the in-band channel has a disadvantage in that it performs unnecessary operations between the host and the cable card under a non-signal channel or weak-signal channel condition, such that it must perform unnecessary operations between the host and the cable card, irrespective of the tuned in-band channel status.

Method used

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  • Cable broadcast receiver, method for interfacing in-band channel, and method for processing broadcast signal
  • Cable broadcast receiver, method for interfacing in-band channel, and method for processing broadcast signal
  • Cable broadcast receiver, method for interfacing in-band channel, and method for processing broadcast signal

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Embodiment Construction

[0040]Reference will now be made in detail to the preferred implementation of the present application, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0041]FIG. 1 is a diagram illustrating an in-band channel request message and an in-band channel response message between a cable card and a host in a broadcast receiver.

[0042]Referring to FIG. 1, the cable headend non-periodically transmits a signal for upgrading cable card firmware to a destination. In this case, the cable broadcast receiver for receiving / reproducing digital broadcast data receives a homing signal required for upgrading the cable card firmware.

[0043]Individual cable headends have different cable cards. The cable card receives the homing signal from the cable headend, and upgrades the firmware. The homing signal includes a variety of information (e.g., firmware upgrade messages, homing...

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PUM

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Abstract

A cable broadcast receiver, an in-band channel interface method, and a broadcast signal processing method are disclosed. The method for interfacing an in-band channel includes: requesting a tuning of an in-band channel; receiving data of the in-band channel tuned / demodulated by the request, and specific information indicating the presence or absence of validity of the in-band channel data; and performing a decoding process, if the demodulated data is valid by referring to the specific information indicating the validity.

Description

[0001]This application claims the benefit of Korean Patent Application No. 10-2006-0049244, filed on Jun. 1, 2006, which is hereby incorporated by reference as if fully set forth herein.BACKGROUND[0002]1. Field of the Disclosure[0003]The present disclosure relates to a cable broadcast receiver, and a method for interfacing an in-band channel, and a method for processing broadcast signals.[0004]2. Discussion of the Related Art[0005]Generally, a cable broadcast system includes a cable headend acting as a transmitter for transmitting cable broadcast signals and a cable broadcast receiver for receiving the cable broadcast signals.[0006]The cable headend is called a System Operation (SO) headend or a Multiple System Operator (MSO) headend. The cable broadcast receiver uses an open cable scheme for separating a cable card including a Conditional Access (CA) system from a main body. The cable card is called a Point Of Deployment (POD) module, and can be detachably connected to a slot of th...

Claims

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Application Information

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IPC IPC(8): H04N5/455H04N7/173H04N5/50H04N7/16
CPCH04H20/31H04H20/78H04H20/91H04N7/162H04N21/26291H04N21/42607H04N21/6118H04N21/4383H04N21/4384H04N21/4424H04N21/4425H04N21/4882H04N21/4345H04N5/50
Inventor HWANG, SUN HO
Owner LG ELECTRONICS INC
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